Page 423 of 620

4216-1. Maintenance and care
6
Maintenance and care
LS600hL_U(OM50E41U)
NOTICE
■To prevent paint deterioration and corrosion on the body and components (alu-
minum wheels etc.)
●Wash the vehicle immediately in the following cases:
• After driving near the sea coast
• After driving on salted roads
• If coal tar or tree sap is present on the paint surface
• If dead insects, insect droppings or bird droppings are present on the paintsurface
• After driving in an area contaminated with soot, oily smoke, mine dust, iron
powder or chemical substances
• If the vehicle becomes heavily soiled with dust or mud
• If liquids such as benzene and gasoline are spilled on the paint surface
●If the paint is chipped or scratched, have it repaired immediately.
●To prevent the wheels from corroding, remove any dirt and store in a place with
low humidity when storing the wheels.
■Cleaning the exterior lights
●Wash carefully. Do not use organic subs tances or scrub with a hard brush.
This may damage the surfaces of the lights.
●Do not apply wax to the surfaces of the lights.
Wax may cause damage to the lenses.
■When using an automatic car wash
Set the wiper switch to the off position.
If the wiper switch is in “AUTO”, the wipers may operate and the wiper blades may
be damaged.
■When using a high pressure car wash
●When washing the vehicle, do not spray the camera or its surrounding area
directly with a high pressure washer. Shock applied from high pressure water may
cause the device to not operate normally.
●Do not bring the nozzle tip close to joinin g parts, boots (rubber or plastic covers),
or connectors of the following as they may be damaged if they come into contact
with high pressure water.
•Drivetrain
•Steering •Suspension
•Brakes
Page 432 of 620
4306-2. Maintenance
LS600hL_U(OM50E41U)
Head restraints•Do the head restraints movesmoothly and lock securely?
Indicators/buzzers• Do the indicators and buzzers func-tion properly?
Lights
• Do all the lights come on?
• Are the headlights aimed correctly? ( P. 4 7 9 )
Parking brake
• Moves smoothly?
• When parked on a slope and the
parking brake is on, is the vehicle
securely stopped?
Seat belts
• Do the seat belts operate smoothly?
• The seat belts should not be dam-aged.
Seats• Do the seat controls operate prop-erly?
Steering wheel
• Does the steering wheel rotatesmoothly?
• Does the steering wheel have the correct amount of free play?
• There should not be any strange sounds coming from the steering
wheel.
ItemsCheck points
Page 480 of 620

4786-3. Do-it-yourself maintenance
LS600hL_U(OM50E41U)
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may need
replacement. (P. 4 8 1 )
●If the replaced fuse blows again, have the vehicle inspected by your Lexus dealer.
■If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
CAUTION
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or injury.
●Never use a fuse of a higher amperage rating than that indicated, or use any
other object in place of a fuse.
●Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
●Do not modify the fuses or fuse boxes.
■Fuse box near the power control unit
Never check or replace the fuses as there are high voltage parts and wiring near
the fuse box.
Doing so may cause electric shock, resulting in death or serious injury.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer as soon as possible.
Page 483 of 620

4816-3. Do-it-yourself maintenance
6
Maintenance and care
LS600hL_U(OM50E41U)
■LED Lights
The following lights consist of a number of LEDs. If any of the LEDs burn out, take
your vehicle to your Lexus dealer to have the light replaced.
●Headlight low beams
●Headlight low/high beams
●Headlight high beams (vehicles without LKA [Lane-Keeping Assist])
●Parking lights and daytime running lights
●Front side marker lights
●Front turn signal lights
●Front fog lights
●Side turn signal lights
●Outer foot lights
●Tail lights
●Stop lights
●Back-up lights
●Rear side marker lights
●Rear turn signal lights
●High mounted stoplight
●License plate lights
■Condensation build-up on the inside of the lens
Temporary condensation build-up on the insi de of the headlight lens does not indi-
cate a malfunction. Contact your Lexus dealer for more information in the following
situations:
●Large drops of water have built up on the inside of the lens.
●Water has built up inside the headlight.
Light bulbs
If any lights burn out, have it replaced by your Lexus dealer.
Page 484 of 620
4826-3. Do-it-yourself maintenance
LS600hL_U(OM50E41U)
CAUTION
■Handling lights
Do not touch the lights while they are on or immediately after they have been
turned off. Doing so may result in burns.
Page 495 of 620
4937-2. Steps to take in an emergency
7
When trouble arises
LS600hL_U(OM50E41U)
The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
If a warning light turns on or a warning buzzer
sounds
Calmly perform the following actions if any of the warning lights comes
on or flashes. If a light comes on or flashes, but then goes off, this does
not necessarily indicate a malfunction in the system. However, if this
continues to occur, have the vehicle inspected by your Lexus dealer.
Stop the vehicle immediately. Cont inuing to drive the vehicle may
be dangerous.
Warning lightWarning light/Details
(U.S.A.)
(Canada)Brake system warning light (warning buzzer) •Low brake fluid
• Malfunction in the electronically controlled brake system
Page 502 of 620

5007-2. Steps to take in an emergency
LS600hL_U(OM50E41U)
CAUTION
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The
vehicle will become extremely unstable during braking, and the ABS system may
fail, which could cause an accident resulting in death or serious injury.
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and
operate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.
Vehicles with a spare tire
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change
it with the spare tire and have the flat tire repaired by the nearest Lexus dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes.
Vehicles with run-flat tires
●Decelerate to the lowest appropriate speed as soon as possible. Do not drive
over 50 mph (80 km/h).
●Check and adjust the tire inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Have the tire replaced by the nearest
Lexus dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
Page 506 of 620

5047-2. Steps to take in an emergency
LS600hL_U(OM50E41U)
The warning lights and warning buzzers operate as follows depending on
the content of the message. If a message indicates the need for inspection
by a dealer, have the vehicle inspected by your Lexus dealer immediately.
*: A buzzer sounds the first time a message is shown on the multi-information display.
■Warning message in radar cruise mode (if equipped)
In the following cases, the warning message may not be displayed even if vehicle-to-
vehicle distance decreases:
●When your vehicle and the vehicle ahead are traveling at the same speed or the
vehicle ahead is traveling more quickly than your vehicle
●When the vehicle ahead is traveling at a very low speed
●Immediately after cruise control speed is set
●At the instant the accelerator pedal is depressed
Messages and warnings
System warn- ing lightWa r n i n g buzzer
*Wa r n i n g
Remains onSounds
Indicates an important situation
such as the malfunction of the
system related to driving that
may result in danger
Remains on or flashesSounds
Indicates an important situation
such as the malfunction of the
system shown on the multi-infor-
mation display
FlashesSounds
Indicates a situation such as
damage to the vehicle that may
result in danger
Remains onDoes not sound
Indicates a condition such as a
malfunction of electrical compo-
nents and the need for mainte-
nance
FlashesDoes not sound
Indicates a situation such as the
incorrect performance of an
operation and how to perform
the operation correctly